Tuesday, March 12, 2019

What are the greatest challenges facing planet Earth in the 21st Century?

Throughout the 21st atomic number 6 it is easy to see that to a greater extent and much altercates confront the Planet. It would be ticklish to say which is the roughly important or serious as each(prenominal) concerns a different part of the world. It is clear that the major planet is changing and it is disaster at alarming appraise. People approximately the world be woefulness from Poverty and malnutrition while opposites fear about the demand for natural resources and how pottys time we curb before they run out. Population initiateth is a huge matter in countries much(prenominal) as China and India where as in Australia depletion of the oz unrivaled layer is a big worry.However, we hold in been aware of the most of these problems for a while and for me the biggest contend to face the earth yet is clime change. A big realise of climate change is world(a) heat from nursery gases and cytosine emissions. Human wallop is causing more greenhouse gases to be produce d by electrocution fossil fuels and deforestation and this is causing them to pack trapped in the Earths atmosphere making the temperature rise. It is now a detail that the world is getting hotter and Earth is the hottest it has been in at least four hundred years, and possibly level the last 2,000 years. Studies show that the globose surface temperature has change magnitude by approximately 0.3-0.6C over the last century. This may bet resembling a small difference plainly it has big consequences.These temperatures entrust continue to emergence and by the end of the 21st century reasonable global temperatures may increase by 1.4-5.8C. Besides resulting in more hot days, many scientists believe an increase in temperatures may direct to changes in precipitation and weather patterns. Ocean waters leave sour warmer and this may result in more intense and tell on tropical storms and hurricanes. The number of Category 4 and 5 hurricanes has almost three-fold in the last 3 0 years and will continue to increase with global heating plant this will not only cause denouement for human community but besides to the unchangeable fragile environment. ocean levels are in like manner expected to increase by 0.09 0.88 m in the next century, mainly from freeing glaciers and rising seawaters.You can read also WavesMost of the worlds great deal lives on or near the coasts. Global sea levels could rise by more than 20 feet with the loss of shelf frost in Greenland and Antarctica, devastating coastal areas worldwide. If the polar ice cap were to melt then sea levels world wide would increase by 20ft, print al-Qaida to 40 one million million community would be underwater, the Bay of Bengal, Calcutta, India home to 60 million tidy sum would be completely gone. Think of the impact of a few hundred refugees and then imagine 100 million the planet will be destroyed if something is not done.Global warming may also affect wildlife and species that cannot sur vive in warmer environments and these may become extinct. At least 279 species of plants and animals are already responding to global warming, touching closer to the poles. Coral Reefs are suffering from coral bleaching the process caused by loss of algae that colour and nourish them. Also, human health is also at stake, as global warming may result in the spreading of certain diseases such as malaria, the flooding of major cities, a greater risk of heat stroke for individuals, and poor air quality. Indias surpass heat wave in 50 years eliminateed more than 2,500 people in May 1998. Britain in 2006 suffered from major heat waves throughout the summer, 1 year later floods have swept all over the country. in all challenges that face the planet interlink with each other and relate to one another. Rapid commonwealth growth is not only a challenge to other humans but also to the environment. As the population increases in that location is more demand for food and this is also a pr oblem with global warming. There will be more droughts making it hard to grow crops and importing from other countries will start to become more expensive. some policies have been introduced in the past to try and control the population such as Chinas one child policy. However, such policies have not been pass judgment by other nations as they seem to breech human rights. opposite nations such as Singapore now suffering from an ageing population are trying to increase their population which is not helping the population crisis.Cities are growing larger and larger the natural land around them is being turned into homes and office buildings. Cities are becoming more and more overcrowded and job opportunities are harder to keep with a rising number of the population becoming unemployed. The Economic trend from 1975 to 2003 showed that from 1979 to 1989 the average Unemployment rate was 4.7% 1990 to 2000 the average unemployment rate was 5.1% reaching 5.5% between the period 2000 an d 2007 in that respectfore the rate of unemployment is increasing gradually, this will continue increase will the population growing and will cause many problems.With urbanisation occurring it is using more and more lumber and other natural resources for the buildings. The environment is being scarred and this is also increasing global warming. Deforestation is not the only problem but as the population increasing the demand for button is rising. Natural Resources are quickly disappearing. wholly over the world we are digging up to try and find Coal, oil and gas and we are using our resources at alarming rates.The burning of fossil fuels in factories to make products and power, and the fuels used by trucks, automobiles and jet planes have caused acid rain and a great increase in carbon dioxide and pollution in the atmosphere.However, with natural resources running out at that place could be a positive outcome. Scientist are trying hard to develop saucily ways to use clean energy sources which come renewable energy sources that are better for the environment such a solar and hydroelectric. closely 25,000 people die every day of hunger or hunger-related causes, tally to the United Nations. This is one person every three and a half(a) seconds or a 2004 Asian Tsunami occurring almost every week. Yet there is plenty of food in the world for everyone. The problem is that hungry people are trapped in severe poverty. Part of poverty is caused by neediness of social services. Education and heath services are nigh non existent in poverty stricken nations which causes much of the problem. This leads to diseases such as Phenomena, Malaria or Tuberculosis, 2 of these diseases are highly contagious and with help could be put under control but instead have millions of people die each year.Poverty barely, it is not the individuals fault. They are not superfluous or have made poor decisions but instead there country is most likely been exploited by MEDCs or TNCs or th ey have a corrupt government. Transnational corporations are globalizing mainly in poorer countries as it is better for them. The laws on the environment and labor are s readable stringent meaning they are able to bypass certain rules, however this leads to labor exploitation. Countries that suffer from poverty is also because they have a lack of natural resources they have nothing to offer companies to locate to there country. The dont have oil like the America or farmland like Australia. The somatogenetic environment could be very much a desert like Mali or Sudan it could be land locked like Laos which means that it is hard for things such as trading to take place.In Australia one of their biggest concerns is the depeletion of the ozone layer. It is caused by a build up of man-made chemicals in the atmosphere. One of the main chemicals is in the main known as CFC or chloroflurocarbon. We use CFCs as refrigerants, aerosol bomb spray propellants, as solvents in electronic chemis try, and in the expansion of polystyrene foam. This CFCs vagabond into the atmosphere and release chlorine. Through these reactions the ozone is broken down.This affects both the humans and the eco systems. withal minor problems of ozone depletion can have major effects. Every time even a small amount of the ozone layer is lost, more ultraviolet light from the sun can reach the Earth. This leads to terms of the cornea and other aspects of the eye and is a big cause of skin cancer. It also, inhibits growth of certain plants such as rye and wheat and stresses marine ecosystems as high levels of UV kill plankton.In Conclusion, it has been shown that the Planet does not face just one coming back but has a number that concern the planet. Global Warming is the challenge that associate with other concerns like ozone depletion and rapid population growth but poverty is a matter that we have been facing to decades now. People are now becoming more and more aware of the issues facing the planet are trying to do something about however a lot more will need to happen if we want to reverse the damage we have done.

No comments:

Post a Comment